My Samsung TV has Samsung apps on it, so it has facebook, yahoo, google maps, youtube, hulu, netflix and whatever else there is available for download. It's not much different than Google TV, but google tv is going to be the the big one. It ties into Android, Android developers are encouraged to develop for google tv as well, and there is already an app from Logitech that lets you use your phone as a google tv remote. Samsung is actually switching from their internet tv over to having GoogleTV pre-installed.
If you want to go this route, go google tv.